Q: Do you think that Sauron's eye ever got poked or flew into by a bird?
A: But of course! Lots of times, almost everyday - there being constantly dark in Mordor, that is... and mainly by Nazgul, not birds, King of Angmar being mostly painful, crown above unseen head et al... Why do you think it was called the
red eye, um?
edit: cross-posted with Nogrod, but leaving things be (I like my version better 
)
To Norgrods question, than:
Q: How is Ilúvatar fighting against boredom in the eternity
A: He creates Ainur and they sing. There is no time in eternity, so they may be singing there always, despite what happens down here. From time to time, when he gets bored with just sitting, he stands up and makes exercise for his arms and facial muscles - now smiles, than raises his left hand, and than again his right and so forth
Q: What was Denethor watching in his Palantir by nights?